My build is some except for some tweaking but I noticed that one of the shifter cables (A small section of it) is very close to the top of the muffler were it is welded to the manifold pipe. Does the muffler get hot enough to melt it?
My kit didn't have a clutch cable spring thingy, and the instructions never mentioned it. I noticed that, laying against the head, the cable sheath has melted somewhat, but it is metal lined on the inside and i am too lazy to fix it. Couple of hundred miles and it's still sliding just fine. I imagine that with a bare cable, there couldn't be a problem... to melt it, the muffler would have to be hot enough to melt itself, wouldn't it?